Tags are what WordPress calls is keywords. I attach a small number of tags to every post to help people navigate between content with the same keywords. Tags may be people (David Gauke say), organisations (The Howard League, Revolving Doors Agency), themes (women offenders, homelessness) or specific items (heroin, cocaine, ROTL). If you’re looking to research a particular issue, they can be invaluable.
Originally, the next UN special session on drugs was not scheduled until 2019 but a number of countries, particularly from Central and South America, have lobbied for it to be brought forward three years because they want to see a change in the way the drug problem is tackled globally.